mineral

Hypersthene

Enstatite (Hypersthene variety), (Mg,Fe)SiO3

Hardness: 5.5-6.0 on Mohs scale; Color: Black, dark green or brown with metallic schiller; Luster: Vitreous to pearly, often sub-metallic; Crystal System: Orthorhombic; Specific Gravity: 3.4-3.9

Hardness: 5
Color: Black, dark green or brown with metallic schiller
Luster: Vitreous to pearly, often sub-metallic

Identified June 25, 2026More mineral →

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Physical properties

Hardness: 5.5-6.0 on Mohs scale; Color: Black, dark green or brown with metallic schiller; Luster: Vitreous to pearly, often sub-metallic; Crystal System: Orthorhombic; Specific Gravity: 3.4-3.9

Formation & geological history

Commonly found in igneous and metamorphic rocks, often formed in deep-seated mafic and ultramafic intrusions such as norites. It is part of the pyroxene group.

Uses & applications

Used primarily in jewelry as cabochons or beads, and as a collector's specimen. Its chatoyancy makes it popular for metaphysical healing and decorative items.

Geological facts

The name Hypersthene is Greek for 'over strength', referring to its hardness compared to hornblende. While the term is technically discredited in official mineralogy (now classified as enstatite or ferrosilite), it remains popular in the gemstone trade.

Field identification & locations

Identify by its 'velvety' or 'silky' metallic sheen on a dark surface when rotated under light. Found in regions like Labrador (Canada), Norway, and the United States. Collectors look for strong 'schiller' effect.

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Arenite (SiO2 based)

sedimentary

Schist

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Nephrite Jade

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Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

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mineral